Results 81 to 90 of about 72,458 (351)

Age‐related trends in niche position and specialization in Neotropical vertebrates

Ecography, EarlyView.
Species' niche positions and breadths within a region's environmental space, measured through ecological niche factor analysis (ENFA) as marginality and specialization, can reflect evolutionary constraints related to lineage age. The ‘internal incumbency' hypothesis predicts that older species, due to competitive preemption, occupy more central niche ...
Carlos Calderón del Cid, Fabricio Villalobos, Ricardo Dobrovolski, Bruno Vilela   +3 more
wiley   +1 more source

Afforestation of tropical savannas has mixed consequences for bird communities

Conservation Science and Practice
Land‐use change is a key driver of tropical savanna biodiversity and one such widespread change is the conversion of ancient (i.e., old‐growth) savannas to tree plantations.
Siddhant Mhetre, Prabhav Benara, Yash Gaikwad, Aryan S. Deore, Avishkar Munje, Ashish N. Nerlekar   +5 more
doaj   +1 more source

Savanna burning methodology for fire management and emissions reduction: a critical review of influencing factors [PDF]

, 2016
Savanna fire is a major source of global greenhouse gas (GHG) emissions. In Australia, savanna fire contributes about 3% of annual GHG emissions reportable to the Kyoto Protocol.
Griffiths, Greg, Greg Griffiths, Apan, Armando, Kathryn Reardon-Smith, Maraseni, Tek Narayan, Armando Apan, Tek Narayan Maraseni, Reardon‑Smith, Kathryn   +7 more
core   +1 more source

Macroecological relationships of ant diversity with increasing aridity in Australian tropical savannas: contrasting responses of epigaeic and hypogaeic assemblages

Ecography, EarlyView.
Studies using climatic gradients play a key role in our understanding of the importance of rainfall and temperature as factors regulating species diversity and distribution, and thus of likely responses to climate change. However, such studies currently consider above‐ground species only, ignoring the diverse hypogaeic (subterranean) invertebrate fauna.
François Brassard, Giovanny Destour, Tristan Klaftenberger, Alan N. Andersen   +3 more
wiley   +1 more source

Using data from Landsat, MODIS, VIIRS and PhenoCams to monitor the phenology of California oak/grass savanna and open grassland across spatial scales

, 2017
The Mediterranean-type oak/grass savanna of California is composed of widely spaced oak trees with understory grasses. These savanna regions are interspersed with large areas of more open grasslands.
Yan Liu, M. Hill, Xiaoyang Zhang, Zhuosen Wang, A. Richardson, K. Hufkens, G. Filippa, D. Baldocchi, Siyan Ma, J. Verfaillie, C. Schaaf   +10 more
semanticscholar   +1 more source

Temperature Coefficient Analysis of Polycrystalline PV Modules Under Field Conditions in Ghana

Energy Science &Engineering, EarlyView.
Field measurements from a commercial PV plant in Ghana show polycrystalline module temperature coefficients of −0.473%/°C—31% higher than manufacturer values—highlighting the risk of underestimating energy losses and degradation in fast‐growing West African solar deployments.
Emmanuel Akono Sarsah, Abdul‐Rahim Bawa   +1 more
wiley   +1 more source

Growth and Fruit Yield of Okro as Influenced by Genotypes and Mulch in the Guinea Savannah Conditions of Ghana

International Journal of Agronomy, 2017
The experiment was carried out to assess the suitability of different mulch materials in enhancing the growth and fruit yield of okro. Ten okro genotypes were evaluated in a split plot design with 3 replications. Three treatments of mulch (black plastic,
Richard Yaw Agyare, Mashark Seidu Abdulai, Samuel Saaka Buah, Emmanuel Ayipio, Samuel Kwame Bonsu, Regine Tchientche Kamga   +5 more
doaj   +1 more source

How much grassland do we need?

Grassland Research, EarlyView.
A scaling analysis of global planted grassland area vs. country size. Abstract The United Nations has designated 2026 as the International Year of Rangelands and Pastoralists, drawing attention to the importance of grasslands and the communities that rely on them. Rangelands cover 54% of Earth's land surface, including grasslands, savannas, shrublands,
Jin‐Sheng He
wiley   +1 more source

Testing and Dissemination of Improve Varieties and Agronomic Practices Using the 'Mother-Baby' Approach

, 2014
This study explores raising and sustaining productivity in cereal-legume cropping systems in northern Ghana About the project Project title: AfricaRISING - Sustainable Intensification of Cereal-Based Farming Systems in the Guinea-Sudan-Savanna of ...
International Institute of Tropical Agriculture (IITA), Savanna Agricultural Research Institute (SARI)   +1 more
core   +1 more source

Shared foraging behaviors between hyenas and hominins in the Middle Paleolithic Levant: New evidence from Geula Cave, Israel

Journal of Quaternary Science, EarlyView.
ABSTRACT While competition with large carnivores is likely to have shaped Middle Paleolithic hominins' subsistence behavior, palimpsested human and carnivore accumulations render the signal challenging to isolate. This study presents a detailed zooarchaeological and taphonomic analysis of a non‐anthropogenic faunal assemblage from a MIS 5 (~130–80 ka ...
Meir Orbach, Omry Barzilai, Israel Hershkovitz, Ma'ayan Lev, Reuven Yeshurun   +4 more
wiley   +1 more source